我有以下代码：
[UIView animateWithDuration:0.3
delay:0.0
options:UIViewAnimationCurveEaseOut | UIViewAnimationOptionAllowUserInteraction
animations:^{
CGRect r = [btn frame];
r.origin.y -= 40;
[btn setFrame: r];
}
completion:^(BOOL done){
if(done){
[UIView animateWithDuration:0.3
delay:1
options:UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction
animations:^{
CGRect r = [btn frame];
r.origin.y += 40;
[btn setFrame: r];
}
completion:^(BOOL done){if(done) zombiePopping = 0; }];
}
}];
问题是，即使我使用的是UIViewAnimationOptionAllowInteraction，按钮也不会在动画时响应触摸，这对我来说有点奇怪。
也许最好用Core Animation来完成这项工作？如果是的话，我该怎么做呢？
按钮的可触摸部分在动画时不会与按钮的可见帧重合。
在内部，按钮的框架将设置为动画的最终值。你会发现你可以点击这个区域，它会起作用。
要点击一个移动按钮，你需要对按钮的.layer.presentationLayer属性进行命中测试（需要导入QuartzCore框架才能执行此操作）。这通常在视图控制器中的触摸处理方法中完成。
如果您需要更多，我很乐意扩展这个答案。
以下是如何通过命中测试表示层来响应触摸事件。此代码位于管理按钮的视图控制器子类中。当我这样做时，我对初始触摸而不是触摸结束感兴趣（这通常是当水龙头会注册时），但原理是相同的。
记得导入QuartzCore框架并将其添加到项目中。
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint touchLocation = [touch locationInView:self.view];
for (UIButton *button in self.buttonsOutletCollection)
{
if ([button.layer.presentationLayer hitTest:touchLocation])
{
// This button was hit whilst moving - do something with it here
break;
}
}
}
在我的情况下，我设置superView.alpha = 0，它停止按钮的交互，虽然我设置UIViewAnimationOptionAllowUserInteraction。
解？简单，只需将alpha减少到0.1而不是0
[UIView animateWithDuration:durationTime delay:0 options:UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionOverrideInheritedOptions | UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionRepeat | UIViewAnimationOptionAutoreverse animations: ^{
superView.alpha = 0.1; // 0.0 will make the button unavailable to touch
} completion:nil];
选项的顺序是重要的，您必须先放置UIViewAnimationOptionAllowUserInteraction，然后添加其他选项。
在Swift 3中使用：.allowUserInteraction
我用NSTimer实现了这个：首先，执行开始动画，然后你应该启动一个计时器，这是演示代码：
-(void)fun···
{
[UIView animateWithDuration:0.3
delay:0.0
options:UIViewAnimationCurveEaseOut | UIViewAnimationOptionAllowUserInteraction
animations:^{
CGRect r = [btn frame];
r.origin.y -= 40;
[btn setFrame: r];
}
completion:^(BOOL done){}];
then , you should start an timer,example:
//start timer
if (timer != nil)
{
[timer invalidate];
timer = nil;
}
[self performSelector:@selector(closeButton) withObject:nil afterDelay:0];
}
- (void)closeButton
{
if (timer != nil)
{
return;
}
//start timer
timer = [NSTimer scheduledTimerWithTimeInterval:1.5f target:self selector:@selector(timerEvent) userInfo:nil repeats:NO];
[[NSRunLoop currentRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];
}
- (void)timerEvent
{
[UIView animateWithDuration:0.3
delay:1
options:UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction
animations:^{
CGRect r = [btn frame];
r.origin.y += 40;
[btn setFrame: r];
}
completion:^(BOOL done){if(done) zombiePopping = 0; }];
[timer invalidate];
timer = nil;
}
对于懒惰，Swift（2.0）中的答案相同。如有必要，请更换环和出口集合：
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first
let touchLocation = touch!.locationInView(self.view)
if self.button.layer.presentationLayer()!.hitTest(touchLocation) != nil {
action() // Your action, preferably the original button action.
}
}
Swift 3.0在viewdidload中创建一个superview
let superView = UIView(frame: view.frame)
superView.isUserInteractionEnabled = true
superView.backgroundColor = UIColor.clear
superView.alpha = 0.1
view.addSubview(superView)
现在像这样实施touchesbagan
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let touch = (touches as NSSet).anyObject() as? UITouch else {
return
}
let touchLocation = touch.location(in: self.view)
if btnone.layer.presentation()?.hitTest(touchLocation) != nil {
print("1") // Do stuff for button
}
if btntwo.layer.presentation()?.hitTest(touchLocation) != nil {
print("2") // Do stuff
}
if btnthree.layer.presentation()?.hitTest(touchLocation) != nil {
print(3) // Do stuff
}
if btnfour.layer.presentation()?.hitTest(touchLocation) != nil {
print(4) // Do stuff
}
}
Swift版本：'999'是用于标识目标视图的标记值。
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first
let touchLocation = (touch?.locationInView(self.rootView))!
for view in self.view.subviews {
if let layer = view.layer.presentationLayer()?.hitTest(touchLocation) where view.tag == 999 {
// Here view is the tapped view
print(view)
}
}
}
奇迹般有效
override func hitTest(point: CGPoint, withEvent event: UIEvent?) -> UIView? {
if bounds.contains(point) && !hidden && userInteractionEnabled && enabled {
return self
}
return super.hitTest(point, withEvent: event)
}
虽然this答案也是正确的
如果您有UIButton的子类，最简单的方法是覆盖hitTest之类的
public override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
return self.layer.presentation()?.hitTest(self.convert(point, to: superview)).flatMap { _ in return self } ?? nil
}